Clinical thermometer



Nov. 24, 1931. R. F. SCHNEIDER 1,833,134

CLINICAL THERMOMETER Filed May 20. 1930 WITNESS m v m m. m NN T flwA .C 5 E m w R Patented Nov. 24, 1931 v RALPH F. SCHNEIDER; o1?J-IiIgSE-Y QITxQNEEW JERSEE; mew-Negro MmmcxEm-lcom Lemmememm e 3 ,A ncat immeamay 20, 1930. ,sei'iai No. 453,904."

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edges, however, bei'ngl sl igh tly rounded; one 1 .offlsuohfrolmded edges consm tut ngl 'a lens through, which {the mercury column may, be

us i yr a yhold' hi h' helt-mqm tel j d g t i ijpelof heltinofnetiii 1 ample but not by Way of limitation 1;I 1tlie accompany ng r wings n wh el F g llis s de 'Yi w of'a thenm mete proY' d" v threeg MWes 1 -.ig- 2 is als cfien the lin "22' of Fig.1; Fig. 3"is a fragm'enthryfqiew showing the bottom portion of the fol;ef img om-v e er shown in Fig.- 1 ig-o L is a ragm t y a lview showi the rig i -hahdlp qrtion a thermom te provid tlwith a single gylqo mean 'i mx tereadi y. stab; fer Relat o s p between th eyes pfg there dir, th e ge iqrm ng th e sm l ti n h -me curylcolmnn; n he nsi front i fl er- "m m te hQ l si bnt ypei s ,heessatyjjzo place-the eiclgeof the lens port o direc yn o eip e defin d by th in mu y o umn Q m rc y e i nnel ,alidiflie' l n e oi the e es f the magma-m1 the "mer cpryldoes not become ,vi sible 'tozthe re lei pntill this relation has' been subs fimtielly'established, the'tim'e usually-consumed esta lis ing s h re ati n s much longer th n; th t n essary or e din he'old style fili ieal, thermometer hose gro s-,secpi' n fiS join xcu 'ar ndwhic i not pro id d'w t a'mfl- It-is t eaob' ectof yi nve. i pi1bfi1e hing the prey My nve i ncol emple esp l ma ili a new rr ngem o th graduation ma k o M /O1 i h vicin y pi, th njslperifiionj o the it met a d, condarily, .as M1111 t.h r bu not ss nt al aidgj he provision of ggooves in one onmore oftgheflfzgc es offiie ermome r t b w hw l e ab e the 11 3;1- er.' t0, c al1 into service hispapii'lje sense in order Tito establish the. prope re dingjrelation hip.

Y My invention vi sj illustrated "by 'Way; off'e'X- with iIii ,"5fis zffronti viewi f avfuhrmpifiter 331g) 1 v ded With/two grooves; 01161 at che boittem (of magnifying front?10a midprovided with the g sfilirl bulb 11" and mere-my channel atlternatefillltlegfee marks? Each (sf tliejlins 1' oonstituting the full degree, marks 13a extends graduationmarksfheieto; T refezfto the eel-gas does not extend I below. sufo'h The Flngie As the 'lowerfendsf the fmitioneleeg e.

thro gh h e portion102;;iiixo hliwq i the lower ends of the lines is arrange alp- I oo -flange Wlfih my nventlon. dfine flinesapop responding to" the gupper and lower edge? of m re he e s 2 the? le type is located in a plane bisecting the dihedral angle formed by the magnifying portion a,.all that the reader has to do is to hold thethermometer so as to place his eyes as nearlyas he can calculate into this bisectin'g plane'and then to rotate the "thermometer slightly, being guided by the ends of thetwo ,groups of'lines referred to. Furthermore,-in

' both be read at the same time without turning style markings.

' By arrangingthe thismannerv ofimarking thermometers, the

full'degree lines and the fractional lines can the thermometer, the latter procedure being' necessary with thermometers havingthe old full degree marks 13a the 1 1 61 j 11st described, that is, so that "no portion of such marks extendsabovethe up-,

per edgeofthe mercurychannel, there is provided an unmarked space between each group of fractional degree marks which is larger than .the space between two fractional degree marks. This enlarged space'm'akes it'easier to read thelfractions of a degree, b ut'this feature is not claimed the presentapplicationas it formsthe subject-matter of a separate apphjcat iomserial Number f46,806, 'filed'Ap'ril 24, 1930. Furthermore,the extensionof the full degree linesacross the mercury channel brings *the lower ends of these lines close to the "tion of the invention just described, is of value in connection therewith to persons,

such as nurses, who have frequent occasion I s beyond, the edgeor edgeswhich they would define if, accurately made, especially if all the m'arks whoseinner ends would define an to use'a-c'linical thermometer. F ig'sl land 3 show threegrooves 16 provided on the back of the "thermometer, preferably near the right hand end thereof, suchgroovesbeing ,shown in side view in Fig. 1. Fig. 2, which is a, cross-section onfline2'2 of Fig. 1 shows thelower portionof one of these grooves. A

frequent user of a clinical thermometer who willsohold the thermometer that atleast'one.

of his fingers comes into contact with one or more of the grooves, will soon train his tactile sense so that hewill immediately presentthe jthermometer to his eyes'in approximately the proper readingposition. Instead of a plu rality of grooves, a single groove such .asl7, Fig. 4; located in the back, maybe employed. The groovesmay be arranged on anydesired portion of the thermometer, of course. always I preferably near the rig'ht-handend thereof,- and also preferably'on the bottom side, as

;s'howninFig.3 so that they may not interfere with the markings. Fo'r 'instance, as

, indicated in Fig. 5, one or moregrooves 19 "the thermometer at the bottom edges? If 7 Obviously in any position in they may serve the intended purpose. 7 v

A further advantage of'providing agroove near theright-hand end of alens front thermometer, whether or not providedwith the markings hereinabove described,fis that it Will preventslipping and consequent liability flippedvigorously to shake'down the mercury in channel 12 bE ICk' lI1tQ billb'l'l." r

" to break thethermometerwhen the same is i Various changes infthe specific formsv shown anddescribecbmay be made within the scope of the claims. without departing fron the-spirit off-my invention. Thus, it is notnecessary thatall of the fractional degree marks 146; "should endat the'upper edge of thechannel V12 as one or more of them may that every graduation mark should end at one of theedges of the "channel as long as a sufficient numberjof'such marks'en'd at one edge of the channel and a suflicgent number end at the other edge of the channel in Order becarried over. to the" lower'edge of such channel and thus add'to the number of points: defining such loweredge; nor is it necessary to outline such channel toa degree' usefulfor rapid finding of themercury column. fOf course, the "'arrangement of'thje}graduation" marks. may be reversed, iQe. the'fractional degree marks maybe arranged below the jlowerfedge of the mercury channel instead of above the upper edge as shown inv thedrawi ings, or thearrangementmay be that shown marks did not extend exactly to, or slightly I the same distance oifisuchedge, "Inthe manufacture of lens front thermometers on a large scale it would not alwaysbe feasible to have the edges exactly defined asthe thermometers I are not made exactly alike and, more particularly,'their lens front portions would not :magnify the mercury columns to exactly'the same degree in each thermometer; -A slight variation or inaccuracy in defining the edge may therefore be" expected 'in large scale manufacturing operation. I therefore desire ,it to be understood that such avariation from. the structure defined in the claims would not remove the resulting thermometer. from' the ambit of such claims.

WhenI speak in my claims'ofthe' magni- 'fied mercury channel I refer to the channel as, it appears when viewed through Ithejlens I V f'ront.f 3 l may becut along oneor both of'the sides of 1,

an article' ofmanufactureaclinical thermometer ofthelens fronttype in which ,marks indicatingfull' degreesextend from iao ' cury channel, so that the ends of such marks 7 define between them the location ofsuchmercury channel.

adapted to serve as a 2. As an article of manufacture a clinical I thermometer of the lens front type provided with a cross-wise groove in one of its faces finger grip when the thermometer is shaken. r

RALPH F. SCHNEIDER. 

